Make taskbar icon context menu theme aware (aka enable dark mode)

[luojunyuan]

Description of the new feature / enhancement

Right click PowerToys taskbar icon show a dark style background when use dark mode of system theme.

Scenario when this would be used?

The current theme always white.

Supporting information

No response

[crutkas]

wonder if any of the native CPP code does theme detection ... plus if that context menu could be shifted into theme aware

[1ANKIN1]

first issue keep me interested!!!
#3183